Improvement in rocking-springs for cradles, chairs



A. H. ORDWAY.

Improvement in Rocking-Springs for Cradles, Chairs, &c.

Patented July 9,1872.

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UNITED STATES FIGE.

ALBERT H. ORDWAY, OF SALEM, MASSACHUSETTS.

Specification forming part of Letters Patent No. 128,746, dated J iily9, 1872.

I, ALBERT H. ORDWAY, of Salem, in the county of Essex and State ofMassachusetts, have invented certain new and useful Improvements onRocking-Springs adaptable to Cradles, Rocking-Chairs, Carriage-Seats,850., of which the following is a specification:

' Nature and O bjects of the Invention.

are secured to the bottom of the cradle, chair,

or seat for which they are intended. One or more pairs of springs may beused, according to the size and weight of the object for which they areintended to serve as rockers.

On the drawing, Figure 1 is a side view of my improvement as applied toa cradle, and Fig. 2 is an end view of the same.

Similar letters refer to similar parts wherever they occur on thedrawing. I

a a is a suitable frame work, connected together by means of a brace, b,or its equivalents, as shown. 0 is the bottom of the cradle, to whichare secured the braces d d in the usual way. A pair of metallic springs,e e, is attached with their upper ends f f to the brace d or itsequivalent, and to the frame a with its lower ends 9 g, in a suitablemanner, by means of screws or similar arrangement, as may be'convenient.The springs e e are bent in a semicircular shape, or nearly so, asshown, and are attached together by means of the clamp h, or itsequivalent, at the place where they touch each other, as shown in Fig.2.

The springs e e are originally straight, but by attaching them to eachother and to the braces a 01 they areconfined to a semicircular form, ornearly so, as shown, by which arrangement great elasticity anddurability are attained in the operation of said spring. On the drawingtwo pairs of springs e e are shown; but one or more pairs may also beused, according to the size of the object for which they are intended.

The advantages over other springs orrockers are, that I am able toobtain a very easy and agreeable motion for the cradle, &c., and thatthe springs can be operated with a very slight power, and they willcontinue in motion forward and backward longer than other springs orrockers after the rocking power ceases. When applied to a cradle thesprings may be operated easily by the operator by pressing his or herfoot on the lower curve of any of the springs e e where it is attachedto the frame-work a or the cradle may be rocked by operating the upperpart of it in the ordinary way, if desired. The springs c e are shownflat in the drawing; but they may also be made of any other suitablesectional form, if desirable.

Having thus fully described the nature, construction, and operation ofmy invention, I

wish to secure by Letters Patent and claim- In combination with theframe a and the sides or bottom of a cradle, chair, &c., thesemicircular springs e 6, when each pair of springs is made in twodistinct pieces and connected together by means of the clamp or brace h,for the purpose and in a manner as shown and described.

ALBERT H. ORDWAY. Witnesses: ALBAN ANnRnN, E. E. TORREY.

